If the captain walks the last lap, so does everybody else. Culture copies whoever is up front.

Groups take their permission level from whoever is most visible, not from what anyone says the standard is. One person easing off rewrites the agreement instantly, because everyone else now has cover. This works in both directions, which means a single person holding the line changes what is acceptable without a word being spoken.

Assume someone is reading your effort even when no one is looking at you. If you lead anything, finish the thing you are asking others to finish. If you do not, notice who you have been copying.